Lanthanum oxide or oxide-forming salts thereof

Lanthanum oxide or oxide-forming salts thereof · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC04B2235/3227
Official titleLanthanum oxide or oxide-forming salts thereof
Display labelLanthanum oxide or oxide-forming salts thereof
Total patents1,445

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
2015131
2016119
2017131
2018145
2019161
2020126
2021112
2022148
2023136
2024116
202596
202624

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C04B2235/3227?
CPC C04B2235/3227 is the Cooperative Patent Classification code for “Lanthanum oxide or oxide-forming salts thereof.”
How many patents are filed under CPC C04B2235/3227 (Lanthanum oxide or oxide-forming salts thereof)?
Our database includes 1,445 publications tagged with this CPC code.
Is patent activity under CPC C04B2235/3227 growing?
Publication counts under this code: 116 in 2024 vs 96 in 2025 (latest complete years).